gcc/
PR target/59794
* config/i386/i386.c (type_natural_mode): Add a bool parameter
to indicate if type is used for function return value. Warn
ABI change if the vector mode isn't available for function
return value.
(ix86_function_arg_advance): Pass false to type_natural_mode.
(ix86_function_arg): Likewise.
(ix86_gimplify_va_arg): Likewise.
(function_arg_32): Don't warn ABI change.
(ix86_function_value): Pass true to type_natural_mode.
(ix86_return_in_memory): Likewise.
(ix86_struct_value_rtx): Removed.
(TARGET_STRUCT_VALUE_RTX): Likewise.
gcc/testsuite/
PR target/59794
* g++.dg/ext/vector23.C: Also prune ABI change for Linux/x86.
* gcc.target/i386/pr39162.c (y): New __m256i variable.
(bar): Change return type to void. Set y to x.
* gcc.target/i386/pr59794-1.c: New testcase.
* gcc.target/i386/pr59794-2.c: Likewise.
* gcc.target/i386/pr59794-3.c: Likewise.
* gcc.target/i386/pr59794-4.c: Likewise.
* gcc.target/i386/pr59794-5.c: Likewise.
* gcc.target/i386/pr59794-6.c: Likewise.
* gcc.target/i386/pr59794-7.c: Likewise.
From-SVN: r206603
